simplify GrTextureAdjuster given there is only one subclass

src/gpu/GrTextureParamsAdjuster.cpp

Index: src/gpu/GrTextureParamsAdjuster.cpp
diff --git a/src/gpu/GrTextureParamsAdjuster.cpp b/src/gpu/GrTextureParamsAdjuster.cpp
index 4456980e858f478cc94be1bff90888a3f7b6b320..20b77cb8449dc001ef0b2073766f0f350f624258 100644
--- a/src/gpu/GrTextureParamsAdjuster.cpp
+++ b/src/gpu/GrTextureParamsAdjuster.cpp
@@ -112,11 +112,14 @@ static GrTexture* copy_on_gpu(GrTexture* inputTexture, const SkIRect* subset,
     return copyDC->asTexture().release();
 }
 
-GrTextureAdjuster::GrTextureAdjuster(GrTexture* original,
-                                     const SkIRect& contentArea,
-                                     bool isAlphaOnly)
-    : INHERITED(contentArea.width(), contentArea.height(), isAlphaOnly)
-    , fOriginal(original) {
+GrTextureAdjuster::GrTextureAdjuster(GrTexture* original, const SkIRect& contentArea,
+                                     uint32_t uniqueID, SkColorSpace* cs)
+    : INHERITED(contentArea.width(), contentArea.height(),
+                GrPixelConfigIsAlphaOnly(original->config()))
+    , fOriginal(original)
+    , fColorSpace(cs)
+    , fUniqueID(uniqueID)
+{
     SkASSERT(SkIRect::MakeWH(original->width(), original->height()).contains(contentArea));
     if (contentArea.fLeft > 0 || contentArea.fTop > 0 ||
         contentArea.fRight < original->width() || contentArea.fBottom < original->height()) {
@@ -124,6 +127,20 @@ GrTextureAdjuster::GrTextureAdjuster(GrTexture* original,
     }
 }
 
+void GrTextureAdjuster::makeCopyKey(const CopyParams& params, GrUniqueKey* copyKey) {
+    GrUniqueKey baseKey;
+    GrMakeKeyFromImageID(&baseKey, fUniqueID, SkIRect::MakeWH(this->width(), this->height()));
+    MakeCopyKeyFromOrigKey(baseKey, params, copyKey);
+}
+
+void GrTextureAdjuster::didCacheCopy(const GrUniqueKey& copyKey) {
+    // We don't currently have a mechanism for notifications on Images!
+}
+
+SkColorSpace* GrTextureAdjuster::getColorSpace() {
+    return fColorSpace;
+}
+
 GrTexture* GrTextureAdjuster::refCopy(const CopyParams& copyParams) {
     GrTexture* texture = this->originalTexture();
     GrContext* context = texture->getContext();